#include<iostream>
#include<string>
using namespace std;

class Person {
  public:
    string name = "xl";
    int m_age = 20;
    mutable string job = "it";

    void change_name() const { // 常函数无法修改成员属性， 除非成员属性加了mutable
      // this->name = "xll";
      this->job = "it_";
    }
};


void _log() {
  Person *p1 = new Person();

  cout << p1->name <<endl;
}

int main() {
  _log();
  return 0;
}
